not sure you can not have it autolock with the app in play (iMapMyRide). was not able to find an option in the app settings to not lock it. also not being able to interact with the screen at all is a negative. my battery lasts the length of my commutes and then some so that is not a problem with another app I use iRPM which is always displaying the data. the RAM Mount box did protect the phone though. RAM Mount would easily have handled a larger phone or other PDA. YMMV